For me its Animal Kingdom Lodge all the way! It's so amazing inside. It's darker so some people don't like that but I think it's relaxing. The bed was super comfortable and it's so awesome to sit on the balcony and watch the animals or watch the sunrise. It's also quiet. We never heard a peep from the hallway or our neighbors. Just ask @OBNurseNH lol
Having said that Beach Club is also really nice with the amazing pool and walking access to Epcot. Old Key West has some of the biggest rooms on property and a boat to Disney Springs.
And of course Poly and Contemporary are very popular although personally they aren't my favorite resorts.
A few key points when renting though, usually once you're booked you're booked the cancellation and change policies are very strict. DVC Rental Store is who we use and if you are concerned they do sell an insurance policy to help with that. We have to book our trips well in advance and there is no wiggle room for us to change so it's not really a problem for us. Also you don't get daily housekeeping. They empty the trash and refresh your towels on day 4 and if you stay 7 they do a full room clean that day. We usually have the do not disturb sign up anyways so again not a problem for us. Lastly it requires a little patience. The brokers work with existing DVC members to fill rental requests but until the room is booked you kind of sit out there floating lol. Sometimes you get it in a day and sometimes (Like this trip for us) you wait two months and the inventory runs out before you get a rental. We had trouble this time though because we're going during the Wine and DIne half marathon weekend, plus the tail end of food and wine.
There really is no comparison between the deluxe resorts and the values / mods. It's a world of difference lol.